JP2007181884A

JP2007181884A - Abrasive paper and manufacturing method thereof

Info

Publication number: JP2007181884A
Application number: JP2005381373A
Authority: JP
Inventors: Sadayuki Yano; 定幸矢野
Original assignee: DEGUCHI KAYO
Current assignee: DEGUCHI KAYO
Priority date: 2005-12-31
Filing date: 2005-12-31
Publication date: 2007-07-19

Abstract

<P>PROBLEM TO BE SOLVED: To provide an abrasive paper, having loading preventive effect and having high polishing force and excellent durability even in the case of abrasive paper made of fine abrasive grains. <P>SOLUTION: In this abrasive paper 2, an abrasive layer 7 is fixed to the surface of a flexible sheet-like base material 1. The abrasive paper includes a polishing part 3 formed by securing the abrasive layer 7 to the surface of the base material 1; and a space part 4 where abrasive grains are not secured, wherein the proportion of the polishing part 3 and the space part 4 is set so that the polishing part 3 ranges from 30 to 98% of the total. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は紙、布等に研磨材の粉末よりなる砥粒を固着した研磨紙、研磨布等の研磨布紙及びその製造方法に関する。 The present invention relates to abrasive paper such as abrasive paper and abrasive cloth in which abrasive grains made of abrasive powder are fixed to paper and cloth, and a method for producing the same.

従来の研磨布紙（本明細書において、布、紙、不織布、合成樹脂シート等のシート状基材の上に研磨材粉末を接着剤等により固着した、研磨紙、研磨布その他の研磨用シートを総称して「研磨布紙」と言う。）は、通常紙、布等よりなる基材の上に、にかわ等の天然接着剤、フェノール樹脂、エポキシ樹脂等の合成樹脂よりなる合成接着剤を塗布し、その上に珪石、ガーネット、エメリー等の天然研磨材、溶融アルミナ、炭化珪素、等の人工研磨材の粉末等よりなる砥粒を散布して固着せしめたものが用いられている。また耐水処理を施した基材上に耐水性の接着剤を用いて砥粒を固着した耐水研磨紙が湿式研磨用に用いられている。 Conventional abrasive cloth (in this specification, abrasive paper, abrasive cloth or other abrasive sheet in which abrasive powder is fixed on a sheet-like substrate such as cloth, paper, nonwoven fabric, or synthetic resin sheet with an adhesive or the like. Is generally called “abrasive cloth paper”) on a base made of normal paper, cloth or the like, a natural adhesive such as glue, or a synthetic adhesive made of synthetic resin such as phenol resin or epoxy resin. It is used that is coated and then sprayed with abrasive grains made of natural abrasives such as silica, garnet and emery, powders of artificial abrasives such as fused alumina and silicon carbide, and the like. Further, a water-resistant abrasive paper in which abrasive grains are fixed using a water-resistant adhesive on a water-resistant substrate is used for wet polishing.

これらの研磨布紙は金属加工用、木工用、塗装用等に極めて広く用いられているが、その構成は古くから大きな改良はなされていない。従来の研磨布紙の最も大きな問題点は、その耐久性が乏しく、研磨加工の際に、極めて多量の研磨布紙が消費されていることである。研磨布紙の耐久性は基材から研磨材が極めて容易に脱落して、研磨能力を失うためと、研磨布紙の研磨材の粉末よりなる砥粒の間隙に研削で生じた微粉末が詰まり、研削能力が失われることにある。 Although these abrasive cloths are very widely used for metal processing, woodworking, painting, etc., the construction has not been greatly improved since ancient times. The biggest problem of the conventional abrasive cloth is that its durability is poor and an extremely large amount of abrasive cloth is consumed during the polishing process. The durability of the abrasive cloth is because the abrasives fall off the substrate very easily and lose the polishing ability, and the fine powder generated by grinding is clogged in the gaps between the abrasive grains of the abrasive cloth paper abrasive powder. The grinding ability is lost.

湿式研磨は上記の研磨布紙の目詰まりを防ぐ効果が或る程度あるが、木地研磨や塗膜研磨には乾式研磨が多用されるようになり、その研磨布紙の目詰まりを防ぐために、研磨材表面に金属石鹸を溶解して塗布する方法が知られている。しかしこの方法でも目詰まり防止効果は限定的であり、研磨布紙の研磨力が低下すると共に、ワーク表面に金属石鹸の微粉末が付着して残留するため、良好な塗装を行なうためには、下地塗膜の研磨等では上塗り塗装前に、完全な拭き取りを行なう必要がある。 Wet polishing has a certain effect to prevent clogging of the above-mentioned abrasive cloth, but dry polishing is frequently used for wood polishing and coating film polishing in order to prevent clogging of the abrasive cloth. A method of dissolving and applying metal soap on the surface of an abrasive is known. However, even with this method, the effect of preventing clogging is limited, the polishing power of the polishing cloth decreases, and the metal soap fine powder adheres and remains on the work surface. For polishing the undercoat, it is necessary to wipe off completely before top coating.

更に、研磨布紙に要求される性能として、研磨力と仕上げ面荒さと言う二律背反する要求がある。一般的に微粒砥粒よりなる研磨布紙は仕上げ面が細かいが、研磨力が小さく、逆に荒い砥粒よりなる研磨布紙は研磨力は大きいが、仕上げ面が荒い。従って、ワークの研磨に際しては、最初荒い研磨布紙で研磨し、順次目の細かい研磨布紙を用いて研磨する必要があり、数種類の研磨布紙を順次取り替えて、研磨を行なう必要がある。ここで言う「研磨力」とは、研磨布紙の持つ短時間の研磨能力であり、耐久性とは直接は関係がないが、一般に微粒砥粒よりなる研磨布紙は、目詰まりが起こりやすく、耐久性に劣る場合が多い。 Furthermore, as performance required for the polishing cloth, there is a contradictory requirement of polishing power and finished surface roughness. In general, a polishing cloth made of fine abrasive grains has a fine finished surface, but has a low polishing power. Conversely, a polishing cloth made of rough abrasive grains has a high polishing power, but has a rough finished surface. Therefore, when polishing a workpiece, it is necessary to first polish with a rough abrasive cloth, and then sequentially polish with fine abrasive cloth, and it is necessary to perform polishing by sequentially replacing several kinds of abrasive cloth. “Abrasive power” as used herein refers to the short-time polishing ability of abrasive cloth, which is not directly related to durability. Generally, abrasive cloth made of fine abrasive grains is prone to clogging. In many cases, it is inferior in durability.

研磨布紙の目詰まりを除去するために、種々のドレッサーが用いられているが、ドレッサーによる目詰まり解消は容易ではない。 Various dressers are used to remove clogging of the abrasive cloth, but it is not easy to eliminate clogging with the dresser.

また、研磨布紙の目詰まりを防止する手段として、特開平１０−１５１５７２号には、基材上に、砥粒を間隔を隔てて、ドット状に配置した研磨布紙が開示されている。しかしこのドット状に砥粒を配置した研磨布紙は、砥粒のドットの大きさを直径２．５ｍｍ以下と小さくし、ドットの間隔を０．２５ｍｍ以上とする必要があると開示している。この間隔を隔てて砥粒をドット上に配置する方法としては、基材表面にドット状に配置される砥粒は、基材に下塗り接着剤をドット状に塗布して、その上に砥粒を散布して付着させるか、基材全面に下塗り接着剤を塗布してその上に砥粒をドット状に散布して砥粒を付着させ、これらのドット状に付着した砥粒の上に上塗り接着剤を塗布するという方法が開示されているが、砥粒をドット状に配置すること以外は、通常の従来の研磨布紙の製法と同等の方法で製造されるため、下塗り接着剤の上には、砥粒が１層のみしか付着し得ない。従ってドット状の砥粒層は１層の砥粒のみからなるため、ドット状に砥粒を配置することにより、例え研磨作業中の砥粒の目詰まりが防止されたとしても、研磨中に砥粒が簡単に剥落してしまい、研磨布紙の寿命が極めて短く、また研磨布紙上の研磨に有効に働くドット状砥粒層の面積の割合が小さいため、研磨布紙の研磨力が小さいという問題がある。 As means for preventing clogging of abrasive cloth paper, Japanese Patent Laid-Open No. 10-151572 discloses abrasive cloth paper in which abrasive grains are arranged in the form of dots on a substrate at intervals. However, this abrasive cloth paper in which abrasive grains are arranged in the form of dots discloses that the size of the abrasive dots must be reduced to a diameter of 2.5 mm or less and the interval between dots needs to be 0.25 mm or more. . As a method for disposing the abrasive grains on the dots with this interval, the abrasive grains arranged in the form of dots on the surface of the base material are obtained by applying an undercoat adhesive to the base material in the form of dots and applying the abrasive grains on the base. Or apply an undercoat adhesive on the entire surface of the base material, and then apply abrasive particles in the form of dots on the substrate to attach the abrasive grains, and then coat the overcoated abrasive grains. Although a method of applying an adhesive is disclosed, except that the abrasive grains are arranged in a dot shape, it is manufactured by a method equivalent to a conventional method of manufacturing an abrasive cloth. Only one layer of abrasive grains can adhere. Therefore, since the dot-shaped abrasive layer is composed of only one layer of abrasive grains, even if clogging of the abrasive grains during the polishing operation is prevented by arranging the abrasive grains in the dot shape, the abrasive grains are being polished during polishing. Because the grains peel off easily, the life of the polishing cloth is extremely short, and the area ratio of the dot-like abrasive layer that works effectively for polishing on the polishing cloth is small, so the polishing power of the polishing cloth is small. There's a problem.

又本発明者は、特願平６−２８００６２号（特開平８−１１８２４０号）において、砥粒を結合剤等と配合してなる砥粒配合物を円板状に圧縮成型し、焼成してなる砥石車であって、砥石車の片面に波型の凹凸を有し、該波型は該砥石車の中心部から外周部に向って多数の波頭線が略放射状方向に延び且つ該砥石車の中心と同心の同心円に沿った断面における砥石車表面の形状が波状をなす波型を有するオフセット砥石車を開示した。 In addition, in the Japanese Patent Application No. Hei 6-280062 (Japanese Patent Application Laid-Open No. 8-118240), the present inventor compression-molds and burns an abrasive compound comprising an abrasive compounded with a binder or the like into a disk shape. The grinding wheel has corrugated irregularities on one side of the grinding wheel, and the corrugation has a number of crest lines extending in a substantially radial direction from the center to the outer periphery of the grinding wheel. An offset grinding wheel having a corrugated shape in which the shape of the surface of the grinding wheel in a cross section along a concentric circle concentric with the center of the wavy is disclosed.

本発明は、本発明者が砥石車に適用して、目詰まり防止と高い研削力を達成することができた、上記特願平６−２８００６２号に開示した手法を、研磨布紙に適用することにより、研磨布紙の目詰まりと防止効果と、目の細かい砥粒よりなる研磨布紙でも、高い研磨力を有し、耐久性に優れた研磨布紙を提供することを目的とする。 In the present invention, the technique disclosed in the above Japanese Patent Application No. 6-280062, which the inventor has applied to a grinding wheel to prevent clogging and achieve a high grinding force, is applied to abrasive cloth. Accordingly, it is an object of the present invention to provide a polishing cloth having a high polishing power and excellent durability even when the polishing cloth is made of fine abrasive grains and has a clogging and prevention effect on the polishing cloth.

上記目的を達成すべく、本発明者は鋭意研究を重ねた結果、シート状の基材上に研磨材よりなる砥粒を固着してなる研磨布紙において、砥粒層を均一に塗布せず、砥粒層を塗布した部分と砥粒層を塗布しない部分を設けることにより、高い研磨力を維持しつつ、目詰まり防止効果を発揮しうることを見出し、本発明を完成するに到った。 In order to achieve the above-mentioned object, the present inventor has conducted extensive research, and as a result, the abrasive layer is not uniformly applied to the abrasive cloth paper in which abrasive grains made of an abrasive are fixed on a sheet-like substrate. The present inventors have found that by providing a portion where an abrasive layer is applied and a portion where an abrasive layer is not applied, a clogging prevention effect can be exhibited while maintaining high polishing power, and the present invention has been completed. .

即ち、可撓性シート状基材の表面に、砥粒層を固着してなる研磨布紙において、該基材表面に砥粒層を固着した研磨部と、砥粒を固着しない空間部を設け、該研磨部と該空間部の比率を、該研磨部が全体の３０−９８％の範囲となるようにしたことを特徴とする研磨布紙を要旨とする。 That is, in the polishing cloth formed by adhering the abrasive layer to the surface of the flexible sheet-like base material, a polishing part having the abrasive layer fixed to the surface of the base and a space part not adhering the abrasive are provided. The gist of the abrasive cloth paper is characterized in that the ratio of the polishing portion to the space portion is in the range of 30 to 98% of the entire polishing portion.

他の本発明は、シート状基材の表面に固着した該砥粒層が、熱可塑性合成樹脂よりなるバインダーの焼成により互いに結合した砥粒よりなる砥粒層である上記研磨布紙を要旨とする。 Another aspect of the present invention is the above-mentioned abrasive cloth paper, wherein the abrasive layer fixed to the surface of the sheet-like substrate is an abrasive layer made of abrasive grains bonded together by firing a binder made of a thermoplastic synthetic resin. To do.

別の本発明は、シート状基材の表面を研磨部と空間部に区分し、該研磨部の基材表面に、研磨剤粉末よりなる砥粒と熱硬化性合成樹脂よりなるバインダーを配合してなる砥粒配合物を一定の厚みの層状に配置して、所定の形状に圧縮成形した後、全体を該バインダーの硬化温度以上の温度で焼成する研磨布紙の製造法を要旨とする。 In another aspect of the present invention, the surface of the sheet-like substrate is divided into a polishing portion and a space portion, and abrasive particles made of an abrasive powder and a binder made of a thermosetting synthetic resin are blended on the substrate surface of the polishing portion. The gist of the present invention is a method for producing abrasive cloth paper which is arranged in a layer having a certain thickness and compression-molded into a predetermined shape and then fired at a temperature equal to or higher than the curing temperature of the binder.

次に本発明の内容を図面により詳細に説明する。図１は本発明の研磨布紙の一例の平面図、図２は同Ａ−Ｏ−Ａ’断面図、図３は同円弧Ｂ−Ｂに沿う拡大断面図である。１は研磨布紙２のシート状の基材であり、３は研磨部であり、砥粒層７に斜線を施して示す。４は空間部である。図１の例では、研磨布紙２は円板状であって、ディスク研磨機に取り付けて使用される研磨ディスク５を示す。研磨ディスク５の中央には、ディスク研磨機への取付孔６を設ける。 Next, the contents of the present invention will be described in detail with reference to the drawings. 1 is a plan view of an example of the abrasive cloth of the present invention, FIG. 2 is a sectional view taken along the line A-O-A ', and FIG. 3 is an enlarged sectional view taken along the arc BB. Reference numeral 1 denotes a sheet-like substrate of the polishing cloth 2, 3 denotes a polishing portion, and the abrasive grain layer 7 is shown by hatching. 4 is a space part. In the example of FIG. 1, the polishing cloth 2 has a disc shape, and shows a polishing disk 5 used by being attached to a disk polishing machine. In the center of the polishing disk 5, a mounting hole 6 for a disk polishing machine is provided.

図１において、研磨ディスク５の研磨部３と空間部４は放射状の直線よりなる区分線９で区分され、それぞれ細い扇形の研磨部３と空間部４が交互に配置されている。この研磨ディスク５の構成により、研磨ディスク５が回転してワークを研磨する際に、研磨部３と空間部４が交互にワークに接触する結果、研磨屑が遠心力により容易に研磨ディスク５の外方向に排出される結果、研磨部３の目詰まりが防止され、高い研磨力が維持される。 In FIG. 1, the polishing portion 3 and the space portion 4 of the polishing disk 5 are divided by a dividing line 9 formed of a radial straight line, and the thin sector-shaped polishing portions 3 and the space portions 4 are alternately arranged. With this configuration of the polishing disk 5, when the polishing disk 5 rotates to polish the workpiece, the polishing portion 3 and the space portion 4 alternately come into contact with the workpiece. As a result of discharging outward, clogging of the polishing unit 3 is prevented, and high polishing power is maintained.

本発明の研磨布紙において研磨部３と空間部４の面積の割合は研磨部３が３０％以上、９８以下が好ましい。更に好ましくは、研磨部３の面積の割合の下限が５０％以上、上限が９５％以下が好ましい。研磨部３の面積の割合が大き過ぎると、空間部４が狭くなり、研磨屑の排出効果が小さくなる。また研磨部３の面積の割合が小さくなり過ぎると、研磨力が低下する。 In the polishing cloth of the present invention, the ratio of the area of the polishing part 3 to the space part 4 is preferably 30% or more and 98 or less in the polishing part 3. More preferably, the lower limit of the area ratio of the polishing part 3 is 50% or more, and the upper limit is 95% or less. When the ratio of the area of the polishing part 3 is too large, the space part 4 becomes narrow, and the effect of discharging polishing dust becomes small. Moreover, when the ratio of the area of the grinding | polishing part 3 becomes small too much, polishing power will fall.

研磨ディスク５の研磨部３と空間部４の面積の最適な割合は、研磨ディスク５の回転速度によっても変化する。回転速度が大きい場合は、研磨部３の面積の割合を小さく、回転速度が小さい場合は、研磨部３の面積の割合を大きくするのが好ましい。 The optimum ratio of the areas of the polishing part 3 and the space part 4 of the polishing disk 5 also varies depending on the rotational speed of the polishing disk 5. When the rotational speed is high, it is preferable to decrease the area ratio of the polishing unit 3 and when the rotational speed is low, it is preferable to increase the area ratio of the polishing unit 3.

研磨ディスク５の研磨部３と空間部４の幅は研磨ディスク５の直径によって、適切な幅が選ばれる。研磨ディスク５の外周部において、研磨部３の幅を１−１０ｍｍとするのが適当であるが、この範囲に限定されるものではない。 The width of the polishing part 3 and the space part 4 of the polishing disk 5 is selected appropriately depending on the diameter of the polishing disk 5. Although it is appropriate that the width of the polishing portion 3 is 1-10 mm at the outer peripheral portion of the polishing disk 5, it is not limited to this range.

図４は本発明の研磨布紙よなる研磨ディスク５の他の実施例の平面図であり、研磨部３と空間部４を区分する放射状の区分線９が直線状でなく、矢印で示す研磨ディスク５の回転方向に向かって凸状に湾曲した曲線状に形成されている。この区分線９の形状により、研磨屑の研磨ディスク５外方への排出効果が更に高められる。この実施例では空間部４の幅は２ｍｍと細く形成されているため、研磨部３の面積の割合が大きく、研磨力が大きくなる。空間部４の幅は１ｍｍ以上が好ましく、更に好ましくは１．５ｍｍ以上である。 FIG. 4 is a plan view of another embodiment of the polishing disk 5 made of the polishing cloth of the present invention, in which the radial dividing lines 9 dividing the polishing portion 3 and the space portion 4 are not linear but are indicated by arrows. It is formed in a curved shape that is convexly curved in the rotational direction of the disk 5. The shape of the dividing line 9 further enhances the effect of discharging the polishing dust to the outside of the polishing disk 5. In this embodiment, since the width of the space portion 4 is as thin as 2 mm, the proportion of the area of the polishing portion 3 is large, and the polishing power is increased. The width of the space 4 is preferably 1 mm or more, and more preferably 1.5 mm or more.

本発明の研磨ディスク５は図１に示すように、研磨ディスク５の中心に、回転研磨機の回転軸に取付ける取付孔６を設けて、ねじ止めする方法と、回転研磨機の回転軸に予め可撓性回転円盤を固着しておき、その回転円盤上に、図４に示すような取付孔のない研磨ディスク５の裏面に粘着剤を塗布しておいて貼着する方法、研磨ディスク５を回転円盤上に面ファスナーにより、着脱自在に取り付ける方法等、公知のあらゆる研磨ディスクの回転研磨機への取付法が可能である。 As shown in FIG. 1, the polishing disc 5 of the present invention is provided with a mounting hole 6 attached to the rotary shaft of the rotary polishing machine at the center of the polishing disc 5 and screwed, and the rotary disc of the rotary polishing machine in advance. A method in which a flexible rotating disk is fixed and an adhesive is applied to the back surface of a polishing disk 5 having no mounting hole as shown in FIG. Any known method of attaching a polishing disk to a rotary polishing machine, such as a method of detachably mounting on a rotating disk with a surface fastener, is possible.

本発明の研磨布紙は、広い平面状研磨布紙であってもよく、これを使用目的に合わせて、適宜必要な形状に裁断して用いることができる。手研ぎ用研磨布紙として用いることができ、またバイブレーションサンダー等に取り付けて使用することも可能である。 The abrasive cloth of the present invention may be a wide flat abrasive cloth, which can be appropriately cut into a necessary shape according to the purpose of use. It can be used as hand-grinding abrasive cloth, and can also be attached to a vibration sander or the like.

図５は本発明の研磨布紙の研磨部３の一例の拡大平面図、図６は同Ｃ−Ｃ断面図である。研磨部３を構成する砥粒層７の表面に半球状の球面状突起１６が全面に密接して形成されている。球面状突起１６の大きさは直径２−４ｍｍ程度が好ましい。球面状突起１６の大きさは均一な大きさのものを配列してもよいが、図６の断面図に示すように、２種類以上の高さの異なる球面状突起１６を混合して配列するのが好ましい。球面状突起１６を構成する砥粒は、球面状突起１６の大きさよりも遥かに細粒の砥粒で構成する。例えばＰ６０の砥粒で直径３ｍｍの球面状突起１６を構成することができる。 FIG. 5 is an enlarged plan view of an example of the polishing portion 3 of the polishing cloth of the present invention, and FIG. A hemispherical spherical protrusion 16 is formed in close contact with the entire surface of the abrasive grain layer 7 constituting the polishing portion 3. The size of the spherical protrusion 16 is preferably about 2 to 4 mm in diameter. The spherical protrusions 16 may be arranged in a uniform size, but as shown in the sectional view of FIG. 6, two or more kinds of spherical protrusions 16 having different heights are mixed and arranged. Is preferred. The abrasive grains constituting the spherical protrusion 16 are made of abrasive grains far finer than the size of the spherical protrusion 16. For example, the spherical projection 16 having a diameter of 3 mm can be formed by using P60 abrasive grains.

図５及び図６に示す球面状突起１６は、本発明の全ての研磨布紙の研磨部３に形成することができ、図１及び図４に示す研磨ディスク５の研磨部３のと砥粒層７表面全面に設けることができる。 The spherical projections 16 shown in FIGS. 5 and 6 can be formed on the polishing part 3 of all the polishing cloths of the present invention, and the abrasive grains of the polishing part 3 of the polishing disk 5 shown in FIGS. It can be provided on the entire surface of the layer 7.

図５及び図６に示す細粒の砥粒で構成した球面状突起１６を、研磨部３の全面に配列することにより、粗粒の砥粒で構成した研磨布紙の研磨力を有しながら、細粒の砥粒で構成した研磨布紙の肌理の細かい研磨が可能であり、空間部４の研磨屑の排出効果と相まって、１種類の研磨布紙により、細粒の砥粒による肌理の細かい研磨を、高い研磨力により行なうことができ、研磨作業能率が極めて高くなる。 The spherical projections 16 made of fine abrasive grains shown in FIGS. 5 and 6 are arranged on the entire surface of the polishing section 3, so that the polishing cloth paper made of coarse abrasive grains has the polishing power. Fine polishing of the polishing cloth composed of fine abrasive grains is possible, and coupled with the discharge effect of the polishing debris in the space 4, the texture of the fine abrasive grains can be reduced by one type of polishing cloth. Fine polishing can be performed with high polishing power, and the polishing work efficiency becomes extremely high.

球面状突起１６の形状は必ずしも完全な球面である必要は全くない。突起頂部が丸みを帯びた形状でありさえすればよく、本明細書で「球面状突起」の語は「頂点が球面状に丸みを帯びた突起」を意味する語として用いる。頂点が球面状に丸みを帯びた突起は、これによるワークの研磨の際、突起の頂点の摩擦による深い擦痕がワークの研磨面に付きにくく、肌理の細かい研磨が可能となる。 The shape of the spherical protrusion 16 does not necessarily have to be a complete spherical surface. It is only necessary that the top of the protrusion has a rounded shape, and the term “spherical protrusion” is used in this specification as a word that means “a protrusion whose surface is rounded into a spherical shape”. When the workpiece is polished by this, the projection having a rounded apex is difficult to adhere to the polishing surface of the workpiece due to friction at the apex of the projection, and fine polishing is possible.

本発明の研磨布紙に用いられる可撓性基材１は布、紙、合成樹脂シート、不織布、バルカナイズドファイバー板等、公知の研磨布紙に用いられるあらゆるシート状基材が用いられる。また硬質ゴム板等も用いることができる。またこれらを複合したシート状基材を用いることも可能である。後述するように、研磨部３の砥粒層７を焼成して作成する場合は、基材１は焼成温度に耐える耐熱性が必要である。 As the flexible base material 1 used for the abrasive cloth of the present invention, any sheet-like base material used for known abrasive cloth paper such as cloth, paper, synthetic resin sheet, non-woven fabric, vulcanized fiber board and the like is used. A hard rubber plate or the like can also be used. It is also possible to use a sheet-like base material that combines these. As will be described later, when the abrasive layer 7 of the polishing unit 3 is formed by baking, the base material 1 needs to have heat resistance that can withstand the baking temperature.

本発明の研磨布紙に用いられる砥粒は、珪石、ガーネット、エメリー等の天然研磨材、溶融アルミナ、炭化珪素、ジルコニヤ等の人工研磨材の粉末等よりなる砥粒をいずれも用いることができ、ダイヤモンド粉末、立方晶窒化硼素等の超砥粒を用いることもできる。またこれらの素材よりなる砥粒を混合して用いることも可能である。更に砥粒中にゴム弾性体の粉末を配合したものを用いることができる。ゴム弾性体粉末を配合することにより、砥粒層７の柔軟性が増し、屈曲による砥粒層７の剥離、脱落が防止できる。 As the abrasive grains used in the abrasive cloth of the present invention, any abrasive grains made of natural abrasives such as silica, garnet and emery, powders of artificial abrasives such as fused alumina, silicon carbide and zirconia can be used. Superabrasive grains such as diamond powder and cubic boron nitride can also be used. It is also possible to mix and use abrasive grains made of these materials. Furthermore, what mix | blended the powder of the rubber elastic body in the abrasive grain can be used. By blending the rubber elastic body powder, the flexibility of the abrasive layer 7 is increased, and peeling and dropping of the abrasive layer 7 due to bending can be prevented.

本発明の研磨布紙に用いられる砥粒の粒度は特に制限はなく、公知の研磨布紙に用いられる粒度の砥粒が全て用いられる。しかし細粒の砥粒でも大きな研磨力を発揮するため、比較的細粒の砥粒、例えばＰ６０又はこれより細粒の砥粒が好ましく用いられる。 There is no restriction | limiting in particular in the particle size of the abrasive grain used for the abrasive cloth of this invention, All the abrasive grains of the particle diameter used for well-known abrasive cloth paper are used. However, since a fine abrasive grain also exhibits a large polishing force, a relatively fine abrasive grain, for example, P60 or a finer abrasive grain is preferably used.

本発明の研磨布紙を製造する方法として、砥粒を固着した研磨布紙を所定のパターンに切り抜いたものを、基材１上に貼り付けることにより、本発明の研磨布紙を作成することも可能である。 As a method for producing the abrasive cloth paper of the present invention, the abrasive cloth paper of the present invention is prepared by sticking on the base material 1 the abrasive cloth paper to which the abrasive grains are fixed, cut out in a predetermined pattern. Is also possible.

本発明の研磨布紙の他の製造法としては、砥粒にレゾール型或いはベンジリックエーテル型等の液状フェノール樹脂、粉状低縮合フェノール樹脂、エポキシ樹脂等の熱硬化性樹脂よりなるバインダーを配合した砥粒配合物を、適当な治具を用いて基材１上に所定の研磨部のパターンに適当な厚みで配設し、圧縮成形した後、バインダーの硬化温度以上の温度で焼成して、基材に対して及び砥粒相互に強固に固着した砥粒層を形成する方法が好ましく用いられる。 As another manufacturing method of the abrasive cloth of the present invention, a binder made of a thermosetting resin such as a liquid phenol resin such as a resol type or a benzylic ether type, a powdery low-condensation phenol resin, or an epoxy resin is blended with abrasive grains. The abrasive composition thus prepared is disposed on the substrate 1 with a suitable thickness in a predetermined pattern on the substrate 1 using an appropriate jig, compression molded, and then fired at a temperature equal to or higher than the curing temperature of the binder. A method of forming an abrasive layer firmly fixed to the substrate and to each other is preferably used.

図７は本発明の研磨布紙の他の実施例の平面図であり、ベルト研磨機用の長尺の研磨ベルトを示す。この研磨ベルトを環状に接合して用いられる。研磨ベルト８の幅方向に沿って、縞状に研磨部３（図７において斜線を施した部分）と空間部４を配置する。このように研磨部３及び空間部４を配置すると、研磨ベルト８が走行してワークを研削する際に、研磨部３と空間部４が交互にワークに接触することにより、研磨屑が容易に排出され、目詰まりを防止し、高い研磨力を維持することができる。 FIG. 7 is a plan view of another embodiment of the abrasive cloth paper of the present invention, showing a long abrasive belt for a belt polishing machine. This abrasive belt is used in an annular shape. Along the width direction of the polishing belt 8, the polishing portion 3 (the hatched portion in FIG. 7) and the space portion 4 are arranged in a striped pattern. When the polishing unit 3 and the space unit 4 are arranged in this way, when the polishing belt 8 travels and grinds the workpiece, the polishing unit 3 and the space unit 4 alternately come into contact with the workpiece, so that polishing scraps can be easily obtained. It is discharged, prevents clogging, and maintains a high polishing power.

図８は本発明の研磨ベルト８の他の実施例の平面図であり、研磨部３と空間部４を山形に形成し、山形の頂点が研磨ベルト８の矢印で示す走行方向に向けて形成してある。この山形の研磨部３の形状により、研磨屑が研磨ベルト８の両側に排出されやすくなる。
図７及び図８に示す研磨ベルト８の研磨部３の砥粒層７表面にも、図５及び図６に示す球面状突起１６を全面に設けることができる。FIG. 8 is a plan view of another embodiment of the polishing belt 8 of the present invention, in which the polishing portion 3 and the space portion 4 are formed in a mountain shape, and the peak of the mountain shape is formed in the running direction indicated by the arrow of the polishing belt 8. It is. Due to the shape of the chevron-shaped polishing portion 3, polishing waste is easily discharged to both sides of the polishing belt 8.
The spherical protrusions 16 shown in FIGS. 5 and 6 can be provided on the entire surface of the abrasive layer 7 of the polishing portion 3 of the polishing belt 8 shown in FIGS. 7 and 8.

図９は本発明の研磨布紙２の製造に用いられる、砥粒層７のパターン形成用の治具の一例を示す。金属製型枠１０の表面に研磨布紙２に形成すべき空間部４のパターンに一致する位置、形状に合わせて、一定の深さの筒状凹所１１を複数設け、各筒状凹所１１内にそれぞれの筒状凹所１１と同じ断面形状を有し、上下に摺動可能な一定の高さの摺動子１２を嵌合し、各摺動子１２と筒状凹所１１の底面の間にそれぞれつる巻きばね１３を配設して、各摺動子１２にの上面に圧力を加えない状態で各摺動子１２の頂面が、型枠１０の上面から一定の高さ位置に整列するように調整する。摺動子１２の突出高さを変更する場合は筒状凹所１１の底に必要な厚みのスペーサーを配置することにより、調整することができる。図１０に示すように型枠１０の上面から各摺動子１２が一定の高さに僅かに突出した状態で、砥粒配合物１４を型枠１０状に散布し、摺動子１２の頂面１５の高さより上に載っている砥粒配合物１４を全て排除した後、型枠１０全体の上に基材１を載置し、基材１上より加圧して、砥粒配合物１４を圧縮し、基材１上に圧着することができる。 FIG. 9 shows an example of a jig for forming a pattern of the abrasive grain layer 7 used for manufacturing the abrasive cloth 2 of the present invention. A plurality of cylindrical recesses 11 having a certain depth are provided on the surface of the metal mold 10 in accordance with the position and shape matching the pattern of the space 4 to be formed on the polishing cloth 2, and each cylindrical recess 11, which has the same cross-sectional shape as each cylindrical recess 11, and is fitted with a slider 12 having a certain height and slidable in the vertical direction. A helical spring 13 is provided between the bottom surfaces, and the top surface of each slider 12 is at a certain height from the top surface of the mold 10 in a state where no pressure is applied to the top surface of each slider 12. Adjust to align with position. When changing the protrusion height of the slider 12, it can adjust by arrange | positioning the spacer of thickness required for the bottom of the cylindrical recess 11. FIG. As shown in FIG. 10, with each slider 12 protruding slightly from the upper surface of the mold 10 to a certain height, the abrasive composition 14 is sprayed in the form 10 to form the top of the slider 12. After all of the abrasive composition 14 placed above the height of the surface 15 is eliminated, the base material 1 is placed on the entire mold 10 and pressed from above the base material 1, so that the abrasive composition 14 Can be compressed and pressure-bonded onto the substrate 1.

摺動子１２の上面に図５及び図６に示す球面状突起１６を形成するための球面状凹所を形成しておけば、砥粒層７の圧縮成形の際に、所定の球面状突起１６を研磨部３の砥粒層７上に形成することができる。 If a spherical recess for forming the spherical protrusion 16 shown in FIGS. 5 and 6 is formed on the upper surface of the slider 12, a predetermined spherical protrusion is formed during compression molding of the abrasive grain layer 7. 16 can be formed on the abrasive layer 7 of the polishing section 3.

砥粒配合物１４中のバインダーの量は５−１５％が好ましく、８−１２％が更に好ましい。砥粒層７の厚みは焼成後の厚みが０．２−２ｍｍとなるように選ばれる。砥粒層７の焼成後の更に好ましい厚みは０．３−１ｍｍである。この厚みが薄いと研磨布紙の耐久性が小さくなり、厚過ぎると研磨布紙の柔軟性が損なわれる。 The amount of binder in the abrasive composition 14 is preferably 5-15%, more preferably 8-12%. The thickness of the abrasive grain layer 7 is selected so that the thickness after firing is 0.2-2 mm. The more preferable thickness after baking of the abrasive grain layer 7 is 0.3-1 mm. If this thickness is thin, the durability of the abrasive cloth is reduced, and if it is too thick, the flexibility of the abrasive cloth is impaired.

図９に示す治具を用いて砥粒配合物１４を配設する際に、砥粒配合物１４を散布して摺動子１２の頂面１５の高さ以上の砥粒配合物１４を排除する代わりに、摺動子１２の頂面１５の位置から更に一定の高さの位置より上の砥粒配合物１４を排除して、摺動子１２の帳面上にも一定の高さに砥粒配合物１４を載置した状態で、その上に基材１を載置して全体を同様に圧縮成形すると、空間部４にも厚みの薄い砥粒層が形成され、図９の断面図に示すように、研磨部３の砥粒層７と空間部４の砥粒層７が連続して結合した状態に形成される。このように砥粒層７を形成することにより、砥粒層７の脱落が防止でき研磨布紙が更に長寿命となる。このように空間部４にも砥粒層７を形成する場合は、研磨部３の砥粒層７の厚みは３−４ｍｍ、空間部４の砥粒層７の厚みは０．５−１ｍｍ程度が好ましい。 When the abrasive composition 14 is disposed using the jig shown in FIG. 9, the abrasive composition 14 is dispersed to eliminate the abrasive composition 14 that is higher than the height of the top surface 15 of the slider 12. Instead, the abrasive composition 14 above the position of the constant height from the position of the top surface 15 of the slider 12 is eliminated, and the surface of the slider 12 is ground to a constant height. When the base material 1 is placed thereon with the grain composition 14 placed and the whole is compression-molded in the same manner, a thin abrasive grain layer is also formed in the space portion 4, and the cross-sectional view of FIG. As shown in FIG. 3, the abrasive grain layer 7 of the polishing part 3 and the abrasive grain layer 7 of the space part 4 are continuously joined. By forming the abrasive layer 7 in this manner, the abrasive layer 7 can be prevented from falling off, and the abrasive cloth can have a longer life. Thus, when forming the abrasive grain layer 7 also in the space part 4, the thickness of the abrasive grain layer 7 of the grinding | polishing part 3 is 3-4 mm, and the thickness of the abrasive grain layer 7 of the space part 4 is about 0.5-1 mm. Is preferred.

基材１上に砥粒配合物１４を圧着した後、その全体を砥粒配合物１４中のバインダーの硬化温度以上に加熱して焼成する。砥粒配合物１４を圧着するための加圧の圧力は、特に制限はないが、高い圧力で加圧すれば、硬質の砥粒層７が形成され、低い圧力で加圧すれば、軟質の砥粒層７が形成できるので、加圧の圧力により、砥粒層７の高度を調整することができる。軟質の砥粒層７は摩耗が速いが、目詰まりがしにくく、研磨の際目詰まりし易い素材よりなるワークの研磨に適している。焼成の加熱温度はバインダーの種類により変わるが、例えば、フェノール樹脂、エポキシ樹脂の場合は、１２０−１８０℃の範囲が選ばれ、１５０−１６０℃の範囲が更に好ましい。 After the abrasive compound 14 is pressure-bonded on the base material 1, the whole is heated to a temperature equal to or higher than the curing temperature of the binder in the abrasive compound 14 and fired. The pressure for pressurizing the abrasive composition 14 is not particularly limited, but if pressed at a high pressure, a hard abrasive layer 7 is formed, and if pressed at a low pressure, it is soft. Since the abrasive grain layer 7 can be formed, the height of the abrasive grain layer 7 can be adjusted by the pressure of pressurization. The soft abrasive layer 7 is fast to wear, but is not easily clogged, and is suitable for polishing a workpiece made of a material that is easily clogged during polishing. Although the heating temperature of baking changes with the kind of binder, for example, in the case of a phenol resin and an epoxy resin, the range of 120-180 degreeC is chosen, and the range of 150-160 degreeC is still more preferable.

本発明の研磨布紙によれば、研磨布紙２の空間部４により、研磨屑の排出効果が発揮され、研磨布紙の目詰まりが防止され、空間部４による冷却効果と相まって、研磨布紙の耐久性が大幅に向上すると共に、研磨力が極めて高くなる。研磨布紙の耐久性の向上の結果、研磨力作業中に研磨布紙２を短時間で取り替える必要がなくなり、研磨作業の能率が高くなると共に、研磨コストの大幅な削減を図ることができる。 According to the polishing cloth of the present invention, the polishing cloth discharge effect is exhibited by the space portion 4 of the polishing cloth 2, the clogging of the polishing cloth paper is prevented, and coupled with the cooling effect by the space section 4, the polishing cloth The durability of the paper is greatly improved and the polishing power is extremely high. As a result of improving the durability of the polishing cloth, it is not necessary to replace the polishing cloth 2 in a short time during the polishing power operation, so that the efficiency of the polishing work is increased and the polishing cost can be greatly reduced.

更に、微粒砥粒の研磨布紙でも遥かに荒い砥粒の研磨布紙と同等以上の研磨力を発揮する結果、従来は荒い砥粒の研磨布紙から始め、順次、数種の細かい砥粒の研磨布紙に取り替えて研磨を進める必要があったが、本発明の研磨布紙を用いると、最初から細かい砥粒の１種類の研磨布紙を用いて連続して研磨作業を進めることができ、作業能率が極めて向上する。 In addition, the abrasive cloth of fine abrasive grains exhibits a polishing power equivalent to or better than that of abrasive cloth of coarse abrasive grains. As a result, conventionally, starting with abrasive cloth of rough abrasive grains, several kinds of fine abrasive grains are sequentially added. However, when the polishing cloth of the present invention is used, the polishing operation can be continuously performed by using one kind of polishing cloth of fine abrasive grains from the beginning. Work efficiency is greatly improved.

研磨布紙の研磨部３を細粒の砥粒で構成し、その砥粒層７の表面に、球面状突起１６を多数配列して設けることにより、目詰まり防止効果を更に発揮し、荒目砥粒と同じ高い研磨力を維持しながら、肌理の細かい研磨を行なうことができる。 The polishing portion 3 of the polishing cloth is composed of fine abrasive grains, and a large number of spherical protrusions 16 are arranged on the surface of the abrasive grain layer 7 to further exhibit the effect of preventing clogging. While maintaining the same high polishing power as that of abrasive grains, fine polishing can be performed.

本発明の研磨布紙の一例の研磨ディスクの平面図 Plan view of an abrasive disc as an example of the abrasive cloth of the present invention 本発明の研磨布紙の一例の研磨ディスクのＡ−Ｏ−Ａ’断面図 AO-A 'sectional view of an example of a polishing disk of the polishing cloth of the present invention 本発明の研磨布紙の一例の研磨ディスクの円弧Ｂ−Ｂに沿う断面図 Sectional drawing in alignment with circular arc BB of the abrasive disc of an example of the abrasive cloth of this invention 本発明の研磨布紙の他の一例の研磨ディスクの平面図 The top view of the abrasive disc of another example of the abrasive cloth paper of this invention 本発明の研磨布紙の研磨部の一例の拡大平面図 The enlarged plan view of an example of the grinding | polishing part of the abrasive cloth paper of this invention 本発明の研磨布紙の研磨部の一例のＣ−Ｃ断面図 CC sectional drawing of an example of the grinding | polishing part of the abrasive cloth paper of this invention 本発明の研磨布紙の一例の研磨ベルトの平面図 The top view of the polishing belt of an example of the abrasive cloth of this invention 本発明の研磨布紙の他の一例の研磨ベルトの平面図 The top view of the abrasive belt of other examples of the abrasive cloth of this invention 本発明の研磨布紙の製造に用いられる治具の一例の一部断面図 Partial sectional drawing of an example of the jig | tool used for manufacture of the abrasive cloth of this invention 本発明の研磨布紙の別の一例の断面図 Sectional drawing of another example of the abrasive cloth paper of this invention

符号の説明Explanation of symbols

１基材
２研磨布紙
３研磨部
４空間部
５研磨ディスク
６取付孔
７砥粒層
８研磨ベルト
９区分線
１０型枠
１１筒状凹所
１２摺動子
１３つる巻きばね
１４砥粒配合物
１５頂面
１６球面状突起DESCRIPTION OF SYMBOLS 1 Base material 2 Polishing cloth 3 Polishing part 4 Space part 5 Polishing disk 6 Mounting hole 7 Abrasive grain layer 8 Polishing belt 9 Dividing line 10 Mold frame 11 Cylindrical recess 12 Slider 13 Vine spring 14 Abrasive compound 15 Top 16 Spherical projection

Claims

可撓性シート状基材の表面に、砥粒層を固着してなる研磨布紙において、該基材表面に砥粒層を固着した研磨部と、砥粒を固着しない空間部を設け、該研磨部と該空間部の比率を、該研磨部が全体の３０−９８％の範囲となるようにしたことを特徴とする研磨布紙。 In a polishing cloth formed by adhering an abrasive layer to the surface of a flexible sheet-like substrate, a polishing portion having an abrasive layer fixed to the surface of the substrate and a space portion not adhering abrasive are provided, An abrasive cloth paper, characterized in that the ratio of the polishing portion and the space portion is in the range of 30 to 98% of the entire polishing portion.

該研磨部が全体の５０−９０％の範囲である請求項１記載の研磨布紙。 2. The abrasive cloth paper according to claim 1, wherein the polishing portion is in the range of 50 to 90% of the whole.

シート状基材の表面に固着した該砥粒層が、合成樹脂よりなるバインダーの焼成により互いに結合した砥粒よりなる砥粒層である請求項１又は２記載の研磨布紙。 The abrasive cloth paper according to claim 1 or 2, wherein the abrasive layer fixed to the surface of the sheet-like substrate is an abrasive layer made of abrasive grains bonded together by firing a binder made of synthetic resin.

該砥粒層が複数の砥粒が積層した砥粒層である請求項３記載の研磨布紙。 The abrasive cloth paper according to claim 3, wherein the abrasive grain layer is an abrasive grain layer in which a plurality of abrasive grains are laminated.

該砥粒層が砥粒にゴム状弾性体粉末を配合してなる砥粒層である請求項４記載の研磨布紙。 The abrasive cloth paper according to claim 4, wherein the abrasive grain layer is an abrasive grain layer obtained by blending rubber-like elastic powder into abrasive grains.

該研磨部の砥粒層表面が、直径２−４ｍｍの球面状突起を密接して配列した形状に該砥粒層が形成された請求項４又は５記載の研磨布紙。 The abrasive cloth paper according to claim 4 or 5, wherein the abrasive layer surface of the polishing part is formed in a shape in which spherical projections having a diameter of 2-4 mm are closely arranged.

該球面状突起が２種以上の高さの異なる球面状突起を混合して配列した球面状突起である請求項６記載の研磨布紙。 The abrasive cloth paper according to claim 6, wherein the spherical projection is a spherical projection in which two or more kinds of spherical projections having different heights are mixed and arranged.

該研磨布紙が円板状研磨ディスクである請求項１乃至７記載の研磨布紙。 8. The abrasive cloth paper according to claim 1, wherein the abrasive cloth paper is a disc-shaped abrasive disc.

該研磨布紙が放射状の区分線により該研磨部と該空間部に区分された研磨布紙である請求項８記載の研磨布紙。 The abrasive cloth paper according to claim 8, wherein the abrasive cloth paper is an abrasive cloth paper divided into the polishing portion and the space portion by a radial dividing line.

該区分線が該研磨ディスクの回転方向に向かって凸状に湾曲した曲線よりなる請求項９記載の研磨布紙。 The abrasive cloth paper according to claim 9, wherein the dividing line is formed by a curve curved in a convex shape toward the rotation direction of the polishing disk.

該研磨布紙が環状に接合した研磨ベルトである請求項１乃至７記載の研磨布紙。 8. The abrasive cloth paper according to claim 1, wherein the abrasive cloth paper is an abrasive belt joined in an annular shape.

該研磨ベルトが該研磨ベルトの幅方向の縞状に該研磨部と該空間部に区分された研磨ベルトである請求項１１記載の研磨布紙。 The abrasive cloth paper according to claim 11, wherein the abrasive belt is an abrasive belt which is divided into the abrasive part and the space part in a stripe shape in the width direction of the abrasive belt.

該研磨布紙が広い平面状の研磨布紙である請求項３乃至６記載の研磨布紙。 7. The abrasive cloth paper according to claim 3, wherein the abrasive cloth paper is a wide planar abrasive cloth paper.

該研磨布紙の該空間部の基材表面を該研磨部の該砥粒層の厚みよりも厚みの薄い砥粒層で被覆して、その空間部を被覆した砥粒層が該空間部を挟む両側の研磨部の砥粒層と繋がるように形成した請求項４又は５記載の研磨布紙。 The substrate surface of the space portion of the abrasive cloth is coated with an abrasive layer having a thickness smaller than the thickness of the abrasive layer of the polishing portion, and the abrasive layer covering the space portion covers the space portion. The abrasive cloth paper of Claim 4 or 5 formed so that it might connect with the abrasive grain layer of the grinding | polishing part of the both sides which pinch | interpose.

シート状基材の表面を研磨部と空間部に区分し、該研磨部の基材表面に、研磨剤粉末よりなる砥粒と熱硬化性合成樹脂よりなるバインダーを配合してなる砥粒配合物を一定の厚みの層状に配置して、所定の形状に圧縮成形した後、全体を該バインダーの硬化温度以上の温度で焼成する研磨布紙の製造法。 Abrasive compound comprising: a surface of a sheet-like substrate divided into a polishing portion and a space portion; and a polishing agent powder and a binder made of a thermosetting synthetic resin are blended on the substrate surface of the polishing portion. Is formed in a layer with a certain thickness, compression-molded into a predetermined shape, and then fired at a temperature equal to or higher than the curing temperature of the binder.

シート状基材の表面を研磨部と空間部に区分し、該研磨部の基材表面に、研磨剤粉末よりなる砥粒と熱硬化性合成樹脂よりなるバインダーを配合してなる砥粒配合物を一定の厚みの層状に配置し、該空間部の基材表面に、該砥粒配合物を該研磨部に配置した砥粒配合物の厚みよりも薄い厚みに配置して、所定の形状に圧縮成形した後、全体を該バインダーの硬化温度以上の温度で焼成する研磨布紙の製造法。 Abrasive compound comprising: a surface of a sheet-like substrate divided into a polishing portion and a space portion; and a polishing agent powder and a binder made of a thermosetting synthetic resin are blended on the substrate surface of the polishing portion. Are arranged in a layer with a constant thickness, and the abrasive composition is disposed on the surface of the base material in the space portion so as to have a thickness smaller than the thickness of the abrasive composition disposed in the polishing portion. A method for producing abrasive cloth paper, wherein the whole is fired at a temperature equal to or higher than the curing temperature of the binder after compression molding.

該砥粒配合物中にゴム状弾性体粉末を配合した砥粒配合物を用いる請求項１５又は１６記載の研磨布紙の製造法。 17. The method for producing abrasive cloth paper according to claim 15 or 16, wherein an abrasive composition in which rubber-like elastic powder is blended in the abrasive composition is used.